:root {
  /* === BRAND COLORS === */
  --clr-bg:         #080f1e;
  --clr-bg-2:       #0d1829;
  --clr-surface:    #0f1f35;
  --clr-surface-2:  #162540;
  --clr-border:     rgba(255,255,255,0.07);
  --clr-border-hover: rgba(255,255,255,0.15);

  --clr-accent:     #3b82f6;
  --clr-accent-2:   #60a5fa;
  --clr-accent-glow:rgba(59,130,246,0.35);

  --clr-text:       #e8edf5;
  --clr-text-muted: #7a8fa6;
  --clr-text-dim:   #4a5f75;

  --clr-white:      #ffffff;

  /* === TYPOGRAPHY === */
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --fs-xs:   0.75rem;   /* 12px */
  --fs-sm:   0.875rem;  /* 14px */
  --fs-base: 1rem;      /* 16px */
  --fs-md:   1.125rem;  /* 18px */
  --fs-lg:   1.25rem;   /* 20px */
  --fs-xl:   1.5rem;    /* 24px */
  --fs-2xl:  2rem;      /* 32px */
  --fs-3xl:  2.75rem;   /* 44px */
  --fs-4xl:  3.5rem;    /* 56px */

  --fw-light:  300;
  --fw-regular:400;
  --fw-medium: 500;
  --fw-semi:   600;
  --fw-bold:   700;
  --fw-extra:  800;

  --lh-tight:  1.1;
  --lh-snug:   1.3;
  --lh-normal: 1.6;

  /* === SPACING === */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* === LAYOUT === */
  --container-max: 1100px;
  --container-pad: 1.5rem;

  /* === RADII === */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  18px;
  --radius-xl:  24px;
  --radius-full: 9999px;

  /* === SHADOWS === */
  --shadow-card: 0 4px 24px rgba(0,0,0,0.35), 0 1px 4px rgba(0,0,0,0.2);
  --shadow-glow: 0 0 40px var(--clr-accent-glow);

  /* === TRANSITIONS === */
  --ease-out-expo: cubic-bezier(0.19,1,0.22,1);
  --ease-bounce:   cubic-bezier(0.34,1.56,0.64,1);
  --transition:    0.25s var(--ease-out-expo);
}